Panasonic U-8ME2E8 Service Manual & Test Run Service Manual page 166

3. 2WAY Alarm Codes
F08 Alarm
Alarm code
Alarm meaning
Alarm conditions
Probable cause
Check
Correction
Example
Notes
F12 Alarm
Alarm code
Alarm meaning
Alarm conditions
Probable cause
Check
Correction
Example
Notes
F14 Alarm
Alarm code
Alarm meaning
Alarm conditions
Probable cause
Check
Correction
Example
6
Notes
F08
Outdoor air temperature sensor trouble
(1) Short circuit (A/D step is 10 steps or less)
(2) Open circuit (A/D step is 1014 steps or more)
(1) Sensor malfunction (including connector)
(2) The Outdoor Unit Control PCB malfunction
(1) Measure the sensor resistance. Check that the sensor is operating normally.
(2) Use a remote controller monitor or PC monitor to check the temperature that is recognized by
the microcomputer.
—
—
—
F12
Compressor intake temperature sensor trouble
(1) Short circuit (A/D step is 10 steps or less)
(2) Open circuit (A/D step is 1014 steps or more)
(1) Sensor malfunction (including connector)
(2) The Outdoor Unit Control PCB malfunction
(1) Measure the sensor resistance. Check that the sensor is operating normally.
(2) Use a remote controller monitor or PC monitor to check the temperature that is recognized by
the microcomputer.
—
—
—
F14
SCG temperature sensor trouble
(1) Short circuit (A/D step is 10 steps or less)
(2) Open circuit (A/D step is 1014 steps or more)
(1) Sensor malfunction (including connector)
(2) The Outdoor Unit Control PCB malfunction
(1) Measure the sensor resistance. Check that the sensor is operating normally.
(2) Use a remote controller monitor or PC monitor to check the temperature that is recognized by
the microcomputer.
—
—
—
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2WAY SYSTEM
Trouble Diagnosis